CRANIAL COMPLICATIONS

ICP - INTRACRANIAL HYPERTENSION

Definition

Intracranial pressure that is equal to or greater than 20 millimeters of mercury

Form

[X] Form 1
[ ] Form 2

Source

Abstraction (acute record)

Details

Patient must have an ICP monitor in order to code this variable other than ‘88. Not Monitored’ or ‘99. Unknown.’

If intracranial pressure is measured in cmH2O, use the following conversion formula: 1 mmHg = 13.6 cmH2O

ICP monitors are sometimes referred to by brand name in medical records. Examples of different brands of ICP monitors include Ventric, and Codman.

A single spike of 20mm/Hg or greater during a surgical procedure should not be counted as a ‘Yes’ for this variable.

Values labeled CPP (cerebral perfusion pressure) are sometimes listed under ICP monitoring and should NOT be used. CPP monitoring is also measured in mmHg, and should not be confused with the recorded ICP values.

Variables

Form Type

Variable

ID

Question

History

Form 1

CC_Hypertension

417

Intracranial hypertension:

1989-10-01 - Variable Added

Codes and Values

ID 417

For Form: [Form 1]
For Variables: [CC_Hypertension]

Code

Description

1

Monitored, no ICP >=20 mm/HG

2

ICP Fluctuations Are Evident Where Peaks Of >=20 mm/Hg Occur Within One 24 Hour Span

3

ICP Fluctuations Are Evident Where Peaks Of >=20mm/Hg Occur Over More Than A 24 Hour Span

4

ICP Evident Where ICP >=20mm/Hg Is Sustained For Greater Than A 24 Hour Period

88

Not Monitored

99

Unknown

History

Date

Description

1994-02-01

Changed CODE : code 2 means less than or equal to 24 hours duration.

1999-07-01

Changed CODE : to clarify coding of fluctuating ICP.

1999-07-01

Added NOTE : regarding conversion from cmH2O to mmHg.

2010-07-01

Added NOTE : regarding brands of ICP monitors that may be referred to in medical records.

2014-10-01

Added NOTE : A single spike of 20mm/Hg or greater during a surgical procedure should not be counted as a 'Yes' for this variable.

2016-04-01

Changed CODE : revised Codes 2,3 and 4 to better clarify when fluctuations occur and when peaks happen

2017-10-17

Added NOTE : values labeled CPP (cerebral perfusion pressure) are sometimes listed under ICP monitoring and should NOT be used. CPP monitoring is also measured in mmHg, and should not be confused with the recorded ICP values.

SEIZURES

Definition

Self-Reported Seizures

  • How many seizures have you had in the past year? (Since your discharge)

Seizures present post-injury, and if so, when they occurred. May include seizures at more than one time point.

Form

[X] Form 1
[X] Form 2

Source

Interview, Mail-Out (participant or proxy)

Details

Include only seizures since discharge from rehabilitation.

Source

Abstraction (acute and rehabilitation record)

Details

To be collected from the acute and rehabilitation record.

Data sources include EMS, ED, Progress, DC notes, and EEG reports.

If seizure occurs exactly 24 hours post injury, code “Seizures between 24 hours and 7 days after injury” as “Yes”.

If individual had premorbid seizures and drug treatment but no seizures during this hospitalization, code as “absent”.

Seizure can be witnessed by anyone, but must be suspected as a seizure by medical staff notation in the medical chart as seizure, likely/probable seizure, seizure like activity or EEG report.

Key Search Words - epilepsy, seizure, seizure disorder, post-ictal activity, status epilepticus, epileptiform discharges/properties, repetitive rhythmic jerking

Definition

Seizures present prior to injury

Form

[X] Form 1
[ ] Form 2

Source

Pre-Injury History (participant or proxy)

Variables

Form Type

Variable

ID

Question

History

Form 1

HospSeiz

512

Evidence of seizure post-injury:

2017-10-01 - Variable Added
2018-07-01 - Changed VARIABLE : from 'Seizure During Hospitalization; to ;Seizure Post Injury'
2019-01-15 - Changed VARIABLE : back to 'Seizure During Hospitalization; from 'Seizure Post Injury'

Form 1

PriorSeiz

535

Prior to this injury, has a physician ever told you that you have a seizure disorder?

2017-10-01 - Variable Added

Form 1

Seiz24

553

Seizures during first 24 hours after injury:

2017-10-01 - Variable Added

Form 1

Seiz24to7

553

Seizures between 24 hours and 7 days after injury:

2017-10-01 - Variable Added

Form 1

Seiz7Plus

553

Seizure more than 7 days after injury:

2017-10-01 - Variable Added

Form 2

PastYearSeizF

730

How many seizures have you had in the past year (or since your discharge)?

2017-10-01 - Variable Added

Codes and Values

ID 512

For Form: [Form 1]
For Variables: [HospSeiz]

Code

Description

0

No

1

Yes

66

Variable Did Not Exist

99

Unknown

ID 535

For Form: [Form 1]
For Variables: [PriorSeiz]

Code

Description

0

No

1

Yes

66

Variable Did Not Exist

77

Refused

99

Unknown

ID 553

For Form: [Form 1]
For Variables: [Seiz24, Seiz24to7, Seiz7Plus]

Code

Description

0

No

1

Yes

66

Variable Did Not Exist

88

Not Applicable

99

Unknown

ID 730

For Form: [Form 2]
For Variables: [PastYearSeizF]

Code

Description

1

up to three seizures

2

4-12 seizures

3

at least one seizure monthly

4

at least one seizure weekly

5

at least one seizure daily

66

Variable did not exist

88

Not applicable: No seizures

99

Unknown

History

Date

Description

2017-10-01

Variable added to database

2017-10-01

Variable added to database

2018-07-01

Changed variable from 'Seizure During Hospitalization' to 'Seizure Post-Injury'

2019-01-15

Changed variable back to 'Seizure During Hospitalization' from 'Seizure Post-Injury'